A133 Android USB摄像头无法使用,请问是什么问题?

memory LV 7

/dev/video0 权限正常

APP权限也都正常

但是几个APP都不能使用.

memory LV 7

我看摄像头拔插的时候，日志都正常．

YterAA LV 7

不懂安卓，但是linux上好像要配置uvc驱动和gadget

YterAA LV 7

    insmod $MODULES_DIR/sunxi_usb_udc.ko
    insmod $MODULES_DIR/sunxi_usbc.ko

    mount -t configfs none /sys/kernel/config
    mkdir /sys/kernel/config/usb_gadget/g1
    echo "0x18d1" > /sys/kernel/config/usb_gadget/g1/idVendor
    echo "0x0002" > /sys/kernel/config/usb_gadget/g1/idProduct
    mkdir /sys/kernel/config/usb_gadget/g1/strings/0x409
    echo "20080411" > /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber
    echo "Android" > /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer

    mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0
    mkdir -p /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p
    echo 1280 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/wWidth
    echo 720 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/wHeight
    echo 333333 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwFrameInterval
    echo 333333 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwDefaultFrameInterval
    echo 442368000 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwMinBitRate
    echo 442368000 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwMaxBitRate
    echo 1843200 > /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/720p/dwMaxVideoFrameBufferSize
    mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h
    ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/mjpeg/m/ /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/
    ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/ /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/class/fs
    ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/header/h/ /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/streaming/class/hs
    mkdir /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h
    ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h/ /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/class/fs/
    ln -s /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/header/h/ /sys/kernel/config/usb_gadget/g1/functions/uvc.usb0/control/class/ss/

    mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1
    echo 0xc0 > /sys/kernel/config/usb_gadget/g1/configs/c.1/bmAttributes
    echo 500 > /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
    mkdir /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
    mkdir /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
    ln -s /sys/kernel/config/usb_gadget/g1/functions/ffs.adb/ /sys/kernel/config/usb_gadget/g1/configs/c.1/ffs.adb
    mkdir /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0
    ln -s /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0/ /sys/kernel/config/usb_gadget/g1/configs/c.1/mass_storage.usb0
    mkdir /dev/usb-ffs
    mkdir /dev/usb-ffs/adb
    mount -o uid=2000,gid=2000 -t functionfs adb /dev/usb-ffs/adb/
    adbd > /dev/null &
    sleep 2
    udc=`ls /sys/class/udc`
    isudc=0
    echo $udc > /sys/kernel/config/usb_gadget/g1/UDC

whycan晕哥 LV 9

@yteraa
这个脚本貌似把 dvp/mipi 摄像头转为 uvc 摄像头输出，楼主这个刚好相反，要接市场上的uvc摄像头输入.

memory LV 7

console:/ #
console:/ # [   51.065683] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device connect
[   51.287297] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device disconnect
[   51.296303] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device connect
[   51.305433] usb 1-1: new high-speed USB device number 2 using sunxi-ehci
[   51.643945] usb 1-1: device descriptor read/64, error -71
[   52.130666] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device disconnect
[   52.139635] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device connect
[   52.165187] usb 1-1: 1:1: cannot set freq 16000 to ep 0x86
[   52.179819] usb 1-1: 1:2: cannot set freq 24000 to ep 0x86
[   52.194463] usb 1-1: 1:3: cannot set freq 32000 to ep 0x86
[   52.209099] usb 1-1: 1:4: cannot set freq 48000 to ep 0x86
[   52.261975] usb 1-1: 5:0: cannot get min/max values for control 2 (id 5)
[   52.274606] uvcvideo: Found UVC 1.00 device HD Webcam C615 (046d:082c)
[   52.290675] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
[   52.304438] uvcvideo: Failed to query (129) UVC probe control : -71 (exp. 26).
[   52.314829] uvcvideo 1-1:1.2: Entity type for entity Extension 5 was not initialized!
[   52.323704] uvcvideo 1-1:1.2: Entity type for entity Processing 2 was not initialized!
[   52.332705] uvcvideo 1-1:1.2: Entity type for entity Camera 1 was not initialized!
[   52.341254] uvcvideo 1-1:1.2: Entity type for entity Extension 6 was not initialized!
[   52.350132] uvcvideo 1-1:1.2: Entity type for entity Extension 7 was not initialized!
[   52.358975] uvcvideo 1-1:1.2: Entity type for entity Extension 8 was not initialized!
[   52.369065] input: HD Webcam C615 as /devices/platform/soc/5200000.ehci1-controller/usb1/1-1/1-1:1.2/input/input4
[   52.382455] usb 1-1: USB disconnect, device number 2
[   52.680196] usb 1-1: new high-speed USB device number 3 using sunxi-ehci
[   53.298306] uvcvideo: Found UVC 1.00 device HD Webcam C615 (046d:082c)
[   53.319567] uvcvideo 1-1:1.2: Entity type for entity Extension 5 was not initialized!
[   53.328459] uvcvideo 1-1:1.2: Entity type for entity Processing 2 was not initialized!
[   53.337409] uvcvideo 1-1:1.2: Entity type for entity Camera 1 was not initialized!
[   53.345989] uvcvideo 1-1:1.2: Entity type for entity Extension 6 was not initialized!
[   53.354840] uvcvideo 1-1:1.2: Entity type for entity Extension 7 was not initialized!
[   53.363694] uvcvideo 1-1:1.2: Entity type for entity Extension 8 was not initialized!
[   53.374086] input: HD Webcam C615 as /devices/platform/soc/5200000.ehci1-controller/usb1/1-1/1-1:1.2/input/input5

第一个摄像头挂了

console:/ # ls /dev/video0 -l
crwxrwxrwx 1 camera camera 81,  14 2022-08-23 14:45 /dev/video0

memory LV 7

console:/ # [  369.196274] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device connect
[  369.204982] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device disconnect
[  369.280957] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device connect
[  369.556709] usb 1-1: new high-speed USB device number 5 using sunxi-ehci
[  369.921976] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
[  370.020356] uvcvideo 1-1:1.0: Entity type for entity Extension 4 was not initialized!
[  370.029242] uvcvideo 1-1:1.0: Entity type for entity Extension 6 was not initialized!
[  370.038105] uvcvideo 1-1:1.0: Entity type for entity Extension 7 was not initialized!
[  370.046961] uvcvideo 1-1:1.0: Entity type for entity Processing 2 was not initialized!
[  370.055931] uvcvideo 1-1:1.0: Entity type for entity Extension 3 was not initialized!
[  370.064788] uvcvideo 1-1:1.0: Entity type for entity Camera 1 was not initialized!
[  370.074708] input: UVC Camera (046d:0825) as /devices/platform/soc/5200000.ehci1-controller/usb1/1-1/1-1:1.0/input/input7
[  371.431060] usb 1-1: set resolution quirk: cval->res = 384

console:/ # ls /dev/video0 -l
crwxrwxrwx 1 camera camera 81,  14 2022-08-23 14:50 /dev/video0
console:/ #

第二个摄像头也不行

memory LV 7

[  857.588025] sunxi-ehci 5200000.ehci1-controller: ehci_irq: highspeed device connect
[  857.816669] usb 1-1: new high-speed USB device number 5 using sunxi-ehci
[  858.459117] uvcvideo: Found UVC 1.00 device HD Webcam C615 (046d:082c)
[  858.481164] uvcvideo 1-1:1.2: Entity type for entity Extension 5 was not initialized!
[  858.490158] uvcvideo 1-1:1.2: Entity type for entity Processing 2 was not initialized!
[  858.499225] uvcvideo 1-1:1.2: Entity type for entity Camera 1 was not initialized!
[  858.507814] uvcvideo 1-1:1.2: Entity type for entity Extension 6 was not initialized!
[  858.516687] uvcvideo 1-1:1.2: Entity type for entity Extension 7 was not initialized!
[  858.525548] uvcvideo 1-1:1.2: Entity type for entity Extension 8 was not initialized!
[  858.535914] input: HD Webcam C615 as /devices/platform/soc/5200000.ehci1-controller/usb1/1-1/1-1:1.2/input/input7
[  867.189097] type=1400 audit(1661238994.534:336): avc: denied { getattr } for comm="m.webview_shell" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c59,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=org.chromium.webview_shell
[  867.218001] type=1400 audit(1661239007.918:337): avc: denied { dac_override } for comm="irqbalance" capability=1 scontext=u:r:shell:s0 tcontext=u:r:shell:s0 tclass=capability permissive=1
[  908.161265] type=1400 audit(1661239007.918:337): avc: denied { dac_override } for comm="irqbalance" capability=1 scontext=u:r:shell:s0 tcontext=u:r:shell:s0 tclass=capability permissive=1
[  908.181605] type=1400 audit(1661239048.891:338): avc: denied { open } for comm="droid.usbcamera" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c71,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=com.shenyaocn.android.usbcamera
[  908.210824] type=1400 audit(1661239048.891:338): avc: denied { open } for comm="droid.usbcamera" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c71,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=com.shenyaocn.android.usbcamera
[  908.240915] type=1400 audit(1661239048.891:339): avc: denied { getattr } for comm="droid.usbcamera" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c71,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=com.shenyaocn.android.usbcamera
[  913.804113] type=1400 audit(1661239048.891:339): avc: denied { getattr } for comm="droid.usbcamera" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c71,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=com.shenyaocn.android.usbcamera
[  913.834604] type=1400 audit(1661239054.534:340): avc: denied { open } for comm="m.webview_shell" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c59,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=org.chromium.webview_shell
[  913.863385] type=1400 audit(1661239054.534:340): avc: denied { open } for comm="m.webview_shell" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c59,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=org.chromium.webview_shell
[  913.893175] type=1400 audit(1661239054.534:341): avc: denied { getattr } for comm="m.webview_shell" path="/proc/vmstat" dev="proc" ino=4026532021 scontext=u:r:untrusted_app_27:s0:c59,c256,c512,c768 tcontext=u:object_r:proc_vmstat:s0 tclass=file permissive=1 app=org.chromium.webview_shell

再看了一下日志，貌似还是权限问题．

memory LV 7

USB摄像头设备是可以检测到的

memory LV 7

收摊，不搞了，可能是Android 10的bug．

whycan晕哥 LV 9

楼主，先不要放弃治疗，我家里还有一个a133平板电脑，跑的是安卓11，我回去接摄像头帮你试一试。

cola123456 LV 4

@whycan 大神可以求救一下吗

whycan晕哥 LV 9

@cola123456
抱歉，失败了，但是手机是可以用的。

cola123456 LV 4

@whycan 我现在想要PC端两路预览，然后demo里只有1路UVC的我改了cofigfs，但是电脑端始终只有一个逻辑设备，实在搞不清楚是什么原因了可以帮帮忙看看吗？

whycan晕哥 LV 9

@cola123456
可以发个帖子说一下一路 uvc怎么出来的吗？我这边找小伙伴重现问题试一试。

cola123456 LV 4

@whycan 好的已经发帖，板子是V853S的，感谢您，期待回复～